JPH0781661B2 - Connecting member for corrugated pipe and flexible pipe - Google Patents

Abstract

The invention relates to a connecting device (1) for corrugated pipes and hoses (2) having a hose wall (3) which is corrugated in a parallel manner. <??>The core of the invention is that the supporting ring in the form of a sliding sleeve (5), consists of a stop ring (14), of an inner ring (17), which is arranged axially at a distance from said stop ring, webs (16), connecting the stop ring (14) and the inner ring (17) as well as limbs (19) which extend from the inner ring (17) towards the stop ring (14) and have interlocking claws (20). <IMAGE>

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated pipe having parallelly corrugated flexible pipe walls according to the preamble of claim 1 and a connecting member for the flexible pipe.

[0002]

2. Description of the Prior Art A connecting member of the above type is known, for example, from EP-A-0331116. The connecting member comprises, as a flexible tube screw fastening member, a cylindrical casing with a connecting piece that is externally threaded, and has a plurality of window-like openings arranged in a radial plane in the casing wall. A carrier ring is provided inside the casing for connecting the corrugated pipe end or the flexible pipe end, and the carrier ring includes a stopper surface that can be brought into contact with the casing end surface, and a leg portion. Engaging inside the casing, the legs cooperate with locking pawls to secure the corrugated or flexible tube to the free ends of the legs in the area of the window opening. Upon connection, the corrugated or flexible tube is inserted into the casing to the desired depth so that the locking pawl locks into one of the grooves in the corrugated or flexible tube, The locking pawl abuts the inner edge of the window opening to prevent disconnection of the tube. Therefore, anchoring a corrugated or flexible tube in the connecting member is very simple and the tube is never disengaged.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to form a connecting member of the above type so that a corrugated or flexible pipe can also be easily removed.

[0004]

SUMMARY OF THE INVENTION According to the invention, a carrier ring in the form of a slide type brazing joint is a stopper ring, an inner ring axially spaced from the stopper ring and a stopper. The solution consists of a web connecting the ring and the inner ring, and a leg having a free end provided with a locking pawl and extending from the inner ring towards the stopper ring.

[0005]

The locking pawl, which escapes into the window-like opening when connecting the pipes, allows the corrugated pipe or the flexible pipe to be replaced by additionally using an inner ring which is used as a carrier for the leg with the locking pawl. It can also escape into the window opening when it is withdrawn. The prerequisite for this is that the sliding braze joint is axially slidable inward into the casing. In the prior art, the corrugated or flexible tube to be removed exerts a radial inward force on the locking pawl, and therefore the tube is never disengaged, whereas the locking pawl of the present invention is a pull-out tube. It is pressed outward in the radial direction during the ejecting operation. This is possible because the inner ring, located on the leg towards the stopper ring, carries the locking pawl, and the leg shaft or joint of the leg is used in the same force direction. This is because the locking pawl is rotated in the opposite direction to the conventional technique. The locking pawl and the leg portion carrying the locking pawl are applied with traction force, not pressure, when pulling out the corrugated tube or the flexible tube, as opposed to the state in the prior art,
This allows the locking pawl to easily escape into the window opening.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A corrugated tube having a flexible tube wall 3 in which waves are formed in parallel and a connecting member 1 for the flexible tube 3 comprises an approximately cylindrical casing 4 and a slide type brazing joint 5.
Consists of. The casing 4 has a connecting piece 6 in the form of a screw, for example.
And a plurality of window-shaped openings 8 in the casing wall 7. A step forming a ring surface 9 is provided inside the casing 4, and an elastic sealing ring 10 is provided above the step.
Are arranged. This sealing ring 10 consists in the embodiment shown in the drawing of a ring body having an L-shaped cross section, the disc part 11 of the ring body resting on a ring surface 9 against which The cylindrical portion 12 extends in the axial direction. The dimensions of the disk portion 11 and the cylindrical portion 12 are
On the one hand, the free end 13 of the flexible tube 2 can rest on the disk part 11 and on the other hand the cylindrical part 12 is selected so as to surround the free flexible tube end.

The slide type brazing joint 5 includes a stopper ring 14. The stopper ring 14 is in contact with the casing end portion 15 on the outer front side opposite to the connecting component 6 of the casing 4, and a plurality of webs (bridge portions) are spaced from each other on the peripheral edge of the stopper ring 14. 16 are provided. These webs 16 are stopper rings 1
4 extends inward in the axial direction from the inside of the cylindrical casing 4 and is adjacent to the window opening 8. Inside the casing 5, the web 16 carries an inner ring 17, the free end surface 18 of the inner ring 17 abutting the elastic sealing ring 10. Legs 19 are arranged on the inner ring 17 and extend between the webs 16 towards the stopper ring 14.
The free end of each leg 19 is formed as a locking pawl 20, which locks both the corrugated or corrugated flexible tube 2 and the window opening 8 of the casing 5.

The part of the leg 19 which is directly connected to the inner ring 17 is a locking pawl 20 which is pivotable both radially inwards and radially outwards.
Used as a bearing for or as a joint. Therefore, the locking stop 20 is the end 1 of the corrugated or flexible tube 2.
It is pivotable around the joint facing the 3. The joint is formed by directly locking the material cross section of the leg 19 to the inner ring 17.

Each locking pawl 20 extends radially inwardly towards the free end 21 of the locking pawl 20 and radially extends outwardly towards the free end of the locking pawl 20. And an outer slope 23 that is open. When the corrugated pipe or the flexible pipe 2 is introduced, the free end 13 of the corrugated pipe or the flexible pipe 2 collides with the inner slope 22 of the locking pawl 20 so that the locking pawl 20 faces toward the outside and the free space of the window opening 8 is formed. Press inside. Thus, in FIG. 1, the corrugated or flexible tube 2 can slide along the pawl 20 until the free end 13 of the corrugated or flexible tube 2 impinges on the sealing ring 10.

Further, locking projections 24 projecting from the inner slope 22 and the step 25 are formed inside the locking pawl 20 and are located in front of the locking projections 24, respectively, the corrugated pipe or the flexible pipe 2. Into groove 26 (FIG. 1).

The outer slope 23 transitions to a slope 28 which is outward only in the radial direction. The slope 28 has legs 19
Together with the connecting piece 29, which transitions into, the outwardly facing locking projection 30 is formed.

As can be seen in particular in FIG. 2, the elastic sealing ring 10 has a sealing ring 10 through the outer surface 23 of the locking pawl 20 and a sliding type brazing joint 5 through a window opening 8.
Is dimensioned to press and lock against the inner edge 31 of the. In this case, the elasticity of the sealing ring causes the end surface 32 of the stopper ring 14 of the slide type brazing joint 5 on the casing side to be separated from the end portion 15 of the casing to some extent (FIG. 2). In this position as well, the sealing ring 10 is compressed, which results in the free end 33 of the sealing ring 10.
Is slightly deformed radially inward (Fig. 2).

When the free end 13 of the corrugated pipe or the flexible pipe 2 is inserted into the connecting member 1 through the stopper ring 14 of the slide type brazing joint 5, the stopper ring is also inserted and the state shown in FIG. 1 is obtained. . That is, the free end 13 collides with the inner slope 22 of the locking pawl 20, and when the free end 13 is moved further in the axial direction, the free end 13 resists the force of the sealing ring 10 against the force of the sealing ring 10 in the axial direction. Finally, the free end 13 presses against the inner bevel 22 of the locking pawl 20 and pushes the locking pawl 20 into the window opening 8, whereby the corrugated or flexible tube 2 is despite its groove 26. It is possible to slide through the locking projections 24 and 27 to the disc-shaped part 11 of the sealing ring 10.

From the corrugated pipe or the flexible pipe 2 to the locking pawl 2
The pressing force acting on 0 is attenuated, and the stopper ring is extruded by the elastic force of the sealing ring to obtain the state shown in FIG. That is, as soon as the groove 26 is located in front of the inwardly projecting locking projection 24 and thus in front of the locking projection 27, the locking pawl 20 immediately moves from its position in the opening 8 in the direction of the timepiece of the watch.
As shown in Fig. 3, the locking pawl 20 is rotated to the right, so that the locking pawl 20 takes the locking position. In this way, the corrugated or flexible pipe 2 can no longer be automatically detached from the connecting member 1. In this way, the sealing ring 10 pushes the slide-on braze joint 5 into the position shown in FIG. 2 in which the free end 21 of the locking pawl 20 engages the inner edge of the window opening 9 from below. To meet. In this way, the stopper ring 14 is again fitted with the free end 1 of the casing 4.
Located at a distance from 5.

For disengagement, the free end 21 of the locking pawl 20 is again positioned in front of the window opening 8 of the casing, so that the locking pawl 20 can be pivoted radially outwards. Up to the state of FIG. 1, that is to say, the slide type brazing joint 5 is first of all axially inward into the casing 5 in a corrugated or flexible pipe 2.
Together with it must be slid against the force of the sealing ring 10. In this way, the state in which the locking pawl 20 can be rotated outward in the radial direction makes the corrugated pipe or the flexible pipe 2 strong when the slide type brazing joint 5 is slid inward. The pulling, and thus the bevel which is naturally provided for the corrugated or flexible tube 2, is obtained by pushing the locking pawl 20 outwards. As a result, the connecting member 1 and the corrugated pipe or the flexible pipe 2 can be removed again.

[Brief description of drawings]

FIG. 1 is an enlarged side view partially showing a cross-sectional view of a connecting component in a state where one end of a flexible pipe is completely inserted.

FIG. 2 is a side view similar to FIG. 1, but in a locked state.

FIG. 3 is a side view similar to FIGS. 1 and 2, but without the flexible tube.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection member 2 Flexible pipe 3 Flexible pipe wall 4 Casing 5 Sliding type brazing joint 6 Connection component 7 Casing wall 8 Opening 9 Ring surface 10 Sealing ring 11 Disk part 12 Cylindrical part 13 Free end 14 Stopper ring 15 Casing end 16 Web 17 Inner Ring 18 Free End Surface 19 Leg 20 Locking Pawl 21 Free End 22 Slope 23 Outer Side 24 Locking Projection 25 Step 26 Groove 27 Locking Projection 28 Locking Projection 29 Connection Part 30 Locking Projection 31 Inner edge 32 End surface 33 Free end

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 591156928 Flexa Gesellschaft Mitt Beschülenktel Haftung und Company Produktion und Featrip Comandit Gesellschaft FLEXA GESELSCHAFT HAN TUNE TRACH COMPAGNIE P REDUKTION UND VERTR IEB KOMMANDITGE SELL SCHAFT Germany, Day 6450 Hanau 7, Darmstetter Strasse 184 (72) Inventor Ernst Gruber Germany, Day 6450 Hanausch 8, Lanais 12 Who Alfred Bamberg Federal Republic of Germany, Day 6451 Gurosuku lock Tseng Petersburg, Kirch Strasse 1 (56) references JitsuHiraku Akira 62-154722 (JP, U)

Claims (7)

[Claims] 1. An approximately cylindrical casing having a connecting part, a plurality of window-shaped openings provided in a casing wall, a ring surface and leg portions on an end face side, and abutting the casing. A corrugated tube having parallel flexible corrugated flexible tube walls, including a retaining ring and a locking pawl, and a connecting member for the flexible tube, in the form of a slide-on wax joint (5). The ring is a stopper ring (14), an inner ring (17) axially spaced from the stopper ring (14), a web (connecting the stopper ring (14) and the inner ring (17). 16) and a leg (19) having a free end provided with a locking pawl (20) and extending from the inner ring (17) towards the stopper ring (14). Corrugated tube And a connecting member for a flexible pipe. 2. The end (21) of the locking pawl (20) is radially inwardly directed toward the locking pawl (20).
2. An inner bevel (22) extending toward and an outer bevel (23) extending radially outwardly toward the end (21) of the locking pawl (20). A connecting member for the corrugated pipe and the flexible pipe according to claim 1. 3. A stopper surface (28), which faces outwards only in the radial direction, abuts said outer slope (23), which faces outwards in the radial direction. Item 3. A connecting member for a corrugated pipe and a flexible pipe according to Item 2. 4. One of claims 1 to 3, characterized in that each locking pawl (20) has at least one locking projection (24) directed inward in the radial direction. A connecting member for a corrugated pipe and a flexible pipe according to claim. 5. The casing (4) has a step inside which forms a ring surface (9), and an elastic sealing ring (10) is above the step in the casing (4). And the end faces of the slide type brazing joint (5) and its inner ring (17) are arranged in the sealing ring (10).
5. The one of claims 1 to 4, characterized in that the end face is pressed outwards axially with respect to the casing (4) by a sealing ring (10). Connecting members for corrugated and flexible pipes. 6. The locking pawl (20), together with its legs (19), is rotatably supported on the inner ring (17) and the traction force on the corrugated or flexible pipe (2). Is arranged on the basis of the locking protrusion (24) facing inward in the radial direction so that the locking pawl (20) can be rotated outward in the radial direction. Claim 1 characterized by the above.
A connecting member for a corrugated pipe and a flexible pipe according to one of claims 1 to 5. 7. The locking pawl (20) is rotatable about a joint facing the end (13) of the corrugated or flexible tube (2). A connecting member for a corrugated pipe and a flexible pipe according to one of claims 1 to 6.